A bus passenger was spat at and hit with a metal pole an unprovoked attack on a London bus, according to the Metropolitan Police.

Detectives looking for two suspects involved in the attack on a 29-year-old woman have released CCTV images to help their search.

The attack happened on a 344 bus on Battersea Park Road in Wandsworth, close to Latchmere Road, at about 2.30am on August 3.

Police believe four girls were involved in the attack and one of the suspects is said to have hit the female passenger in the face with a small metal pole. Two other suspects are thought to have spat at the victim.

Police released CCTV images of two females as they investigated an unprovoked attack on a bus (Image: Metropolitan Police)

Two young girls - who police say are in their mid-teens - were interviewed by police in October in but then released under investigation.

CCTV images published on Thursday (December 13) show two females - one with a yellow bag and one in a blue dress.